That's a precertificate.
You'll need to find and revoke the actual certificate instead. I can't seem to find it on crt.sh though, I guess it must still be running behind. Anyone know another way? (was there a way to get a cert by serial number from ACME or something like that?)
EDIT: found it, try this
curl https://acme-v01.api.letsencrypt.org/acme/cert/03242fb17e400b625aeb160e9f9e7243d9e5 | openssl x509 -inform der -outform pem > test.pem